Process for welding copper.



metals are welded,

. faces of the two pieces cop welded man open I 'use, or other fire and allow it to remain ROY C. DAVIDSQN, 0F FOR-'1 BLAGKEEUB'E, VIRGINIA.

PRDCESS FOR WELDING- CQPIEER.

No Drawing:

To all whom it may concern."

Be'it known that 1, Roy C. Davmsoma citizen of the United States, residing at Fort Blackmore, in the county of Scott and State .ofVirginia, have invented certain new and useful Improvements in Processes for Vv'elding Copper, of which the following is a specification.

This invention relates to the art of weld? ing copper and has for its objectto provide a very simple and extremely eflicient method or process whereby two pieces of copper of any form may be quickl welded together to produce what is, in e 'ect, a single piece of metal. a

With this object in view, the invention consists in an improved process ,for welding copper, the successive steps of which will be hereinafter made manifest so that any one, even though unfamiliar with the art may successfully weld together several pieces of )er. It has heretofore been found exceedingly difficult, if not altogether impossible, to successfully weld copper, as iron and other so that a satisfactory and lasting union of the two pieces is effect ed. By means of my process, I have overcome the diiiiculties heretofore existing in this art, said process consisting of several simple steps which when properly performed will eventuate into a perfect weld of the copper pieces.

In carrying out my process, I first place the two pieces of copper, which are to be forge, such as blacksmiths thereinuntil it assumes a dull red or bluish color. The copper pieces are now withdrawn from the fire and a quantity of borax is placed upon the, metal. at the meeting surand they are again laced back in the fire. After becoming sufciently heated, the copper pieces are 're-' moved and hammered to closely engage the surfaces thereof, and it isthen once more returned to'the forge fire." When the-copper ieces have been cient yheated, they are removed and a Specification of Ii'etters Pateht.

for a third time sufli- I Patented Jan. 2, 1e12,

Application filed November 19, 1910. Serial No. 593,249.

quantity of ferrous sulfate is. placed upon the engaged ends of the copper pieces.

After placing the ferrous sulfate upon the copper the pieces are placed in the forge fire and when highly heated are removed and hammered together with a suitable sledge. The weld is now completed and it- .will be found that the ferrous sulfate which is last applied closely unitesthe two copper pieces and efi'eotively overcomes all liability of their separation under the maximum strain which they may be expected to sustam.

By means of: my improved welding process as above set forth, I am enabled to weld, together copper in an ordinary blaclrsmiths forge and with the use of the simple tools which are employed in the commonly own process for welding ipkpn. Itwvill be obvious that the piecesmay cheated to a greater orless degree so that they will become rapidly pliable underthe blows of the sledge.

Having thus described the invention what is claimed is The herein described process-for welding copper pieces to be welded to-gether and inserting the same into a fire, then withdrawing the same after they have been heated and placing thereon at their meeting surfaces a quant-ity of borax, then againinsert-mg thefpieces into the fire to be heated and once more removing the same and hammering them together, then returning the pieces tor-be welded to the fire to be again heated, then removing them'and placingnpon the connected ends of the pieces'a quantity of ferrous sulfate, then placing the pieces back which consists in first placing the in the fire until they are highly heated. and,

lastly removing the pieces from the fire and I hammering 'them together to form the .com

pleted weld. I

In testimony whereof I hereunto ailix my signature in the presence of two witnesses.

nor o, DAVIDSON.

Witnesses: I i C. HAWKINS, J. M. Tame. 

